Rock Identifier

Category

Metamorphic Or Sedimentary Depending On Local Grade

Browse metamorphic or sedimentary depending on local grade specimens identified by the Rock Identifier community.

Learn about Metamorphic Or Sedimentary Depending On Local Grade in the encyclopedia

Greenschist

Granulite

Slate

Turbidite

Gneiss

Schist

Chlorite Schist

Chlorite Schist

Amphibolite

Garnet Schist

Migmatite

Biotite Schist

Khondalite

Kyanite in Quartz (Kyanite (Al2SiO5) with Quartz (SiO2)) — metamorphic

Kyanite in Quartz

Kyanite (Al2SiO5) with Quartz (SiO2)

Peach/orange calcite cluster (Calcite (CaCO₃), likely botryoidal or scalenohedral aggregate) — mineral

Peach/orange calcite cluster

Calcite (CaCO₃), likely botryoidal or scalenohedral aggregate

Jasper (Red/Brown) (Microcrystalline Quartz (SiO2) with Iron Oxide inclusions) — sedimentary

Jasper (Red/Brown)

Microcrystalline Quartz (SiO2) with Iron Oxide inclusions

Red Jasper Pebble (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary

Red Jasper Pebble

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Slate (Slate (Foliated Metamorphic Rock)) — metamorphic

Slate

Slate (Foliated Metamorphic Rock)

Kyanite (Blue Kyanite) (Kyanite (Al2SiO5)) — mineral

Kyanite (Blue Kyanite)

Kyanite (Al2SiO5)

Banded Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade metamorphic rock)

Granite Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Granite Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss (High-grade metamorphic rock (Gneiss)) — metamorphic

Gneiss

High-grade metamorphic rock (Gneiss)

Gneiss (Gneiss (High-grade Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Metamorphic Rock)

Black Star Diopside (Diopside (CaMgSi2O6) with asterism) — Mineral

Black Star Diopside

Diopside (CaMgSi2O6) with asterism

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Anthracite Coal (Anthracite (Carbon-rich metamorphic rock)) — metamorphic

Anthracite Coal

Anthracite (Carbon-rich metamorphic rock)

Citrine Quartz (Silicon Dioxide (SiO2) - Ferric Iron impurities) — mineral

Citrine Quartz

Silicon Dioxide (SiO2) - Ferric Iron impurities

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Banded Gneiss (Gneiss (High-grade Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade Metamorphic Rock)

Jasper (Silicon Dioxide (SiO2) microcrystalline quartz) — sedimentary

Jasper

Silicon Dioxide (SiO2) microcrystalline quartz

Pyrite in Matrix (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite in Matrix (Fool's Gold)

Iron Sulfide (FeS2)

Carnelian (Silicon Dioxide (Quartz variety, SiO2)) — mineral

Carnelian

Silicon Dioxide (Quartz variety, SiO2)

Banded gneiss pebble (Gneiss, commonly quartz–feldspar–mica bearing) — metamorphic

Banded gneiss pebble

Gneiss, commonly quartz–feldspar–mica bearing

Banded Gneiss (Gneiss (Felsic to Mafic Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (Felsic to Mafic Metamorphic Rock)

Mica Schist (Mica Schist (primarily Muscovite and Biotite)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite and Biotite)

Fuchsite Schist with Quartz (Chromian Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2] Schist) — metamorphic

Fuchsite Schist with Quartz

Chromian Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2] Schist

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Gneiss (Granitic Gneiss) (Gneiss (composed primarily of Quartz, Feldspar, and Mica)) — metamorphic

Gneiss (Granitic Gneiss)

Gneiss (composed primarily of Quartz, Feldspar, and Mica)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Mica Schist (Mica Schist (predominantly Muscovite or Biotite sheet silicates)) — metamorphic

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Gneiss (Cobble) (Gneiss) — metamorphic

Gneiss (Cobble)

Gneiss

Quartz-veined Gneiss (Gneiss with Quartz (SiO2) intrusions) — metamorphic

Quartz-veined Gneiss

Gneiss with Quartz (SiO2) intrusions

Gneiss (specifically Banded Gneiss) (Gneiss) — metamorphic

Gneiss (specifically Banded Gneiss)

Gneiss

Pietersite (Brecciated Crocidolite in Quartz (Chalcedony)) — metamorphic

Pietersite

Brecciated Crocidolite in Quartz (Chalcedony)

Weathered iron-rich rock fragment (Provisional identification: limonite/goethite-rich material, likely an ironstone fragment) — mineral

Weathered iron-rich rock fragment

Provisional identification: limonite/goethite-rich material, likely an ironstone fragment

Greenstone (Epidosite / Chlorite Schist) (Metabasalt (often contains Epidote Ca2Al2(Fe3+,Al)(SiO4)(Si2O7)O(OH) or Chlorite)) — metamorphic

Greenstone (Epidosite / Chlorite Schist)

Metabasalt (often contains Epidote Ca2Al2(Fe3+,Al)(SiO4)(Si2O7)O(OH) or Chlorite)

Gneiss (High-grade metamorphic rock (Gneiss)) — metamorphic

Gneiss

High-grade metamorphic rock (Gneiss)

Banded Gneiss (Gneiss (High-grade Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade Metamorphic Rock)

Gneiss (Gneiss (High-grade Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Metamorphic Rock)

Likely weathered granite or granitic gneiss fragment (Granite: quartz + feldspar + mica; possibly gneiss if foliation is confirmed) — igneous

Likely weathered granite or granitic gneiss fragment

Granite: quartz + feldspar + mica; possibly gneiss if foliation is confirmed

Granite Gneiss with Garnet (Garnetiferous Gneiss) — metamorphic

Granite Gneiss with Garnet

Garnetiferous Gneiss

Tumbled jasper or chalcedony pebble (Microcrystalline quartz (SiO₂), likely jasper/chalcedony with iron-oxide staining) — mineral

Tumbled jasper or chalcedony pebble

Microcrystalline quartz (SiO₂), likely jasper/chalcedony with iron-oxide staining